I don't like taking my hands off my gamepad to select a ship between respawns. It took me a while to realize I could just hit a button without having to move around with the arrows first, because when you move with an arrow you get a dashed rectangle outline on the selected ship. That outline should appear on the selected one before moving with the arrows to make it more obvious.
(I'm on OS X 10.12.6, if the selection ring is OS-dependent.)
With mouse select there is a blue highlight which is fairly obvious because it tracks around as an on-hover effect under the cursor. If there is such a highlight for the game pad selection I can't tell. If it isn't there, maybe add it. If it is there, maybe make it more obvious?